✗ CI.checksparse: warning for Display Global Histogram (rev2)

[Patchwork]

== Series Details ==

Series: Display Global Histogram (rev2)
URL   : https://patchwork.freedesktop.org/series/138867/
State : warning

== Summary ==

+ trap cleanup EXIT
+ KERNEL=/kernel
+ MT=/root/linux/maintainer-tools
+ git clone https://gitlab.freedesktop.org/drm/maintainer-tools /root/linux/maintainer-tools
Cloning into '/root/linux/maintainer-tools'...
warning: redirecting to https://gitlab.freedesktop.org/drm/maintainer-tools.git/
+ make -C /root/linux/maintainer-tools
make: Entering directory '/root/linux/maintainer-tools'
cc -O2 -g -Wextra -o remap-log remap-log.c
make: Leaving directory '/root/linux/maintainer-tools'
+ cd /kernel
+ git config --global --add safe.directory /kernel
+ /root/linux/maintainer-tools/dim sparse --fast ec87b409d3a9358c9a079186d528fad3f7d64334
/root/linux/maintainer-tools/dim: line 2068: sparse: command not found
Sparse version: 
Fast mode used, each commit won't be checked separately.
+ cleanup
++ stat -c %u:%g /kernel
+ chown -R 1003:1003 /kernel